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US 6,685,922 B2Granted
Tooth whitening material and method of whitening teeth
AssigneeDENTSPLY International Inc.
InventorKenneth S. Peterson
Life of this patent
Estimating the term…
Abstract
A dental tooth whitening material sets to a rubber-like or elastomeric yet fluid consistency. The material includes hydrogen peroxide. A method of whitening teeth employs such a material by placing it into a dental tray or by placing the material directly onto a tooth. Once the material has set to its solid or semi-solid yet fluid consistency, the dental tray, if employed, can be left in place or removed.
Claims1
A tooth whitening composition comprising:
- a mixture comprising a powder phase and a liquid phase;
- said powder phase comprising a salt selected from the group consisting of a mixed powder of sodium/calcium salts of the copolymer of methyl vinyl ether/maleic anhydride, a blend of mixed sodium/calcium salts of the copolymer of methyl vinyl ether/maleic anhydride, and mixtures thereof, and optionally, a filler;
- said liquid phase comprising a solution of from about 3 to about 50 percent by weight of hydrogen peroxide in water.
Dependencies are inferred from the claim text.